Chapter 4 - Matrices

4-1 Organizing Data into Matrices

Know the dimensions of a matrix
Identify a specific matrix element
Organize data into matrices

4-2 Adding and Subtracting Matrices

Add and subtract matrices
Use and find identity and inverse matrices
Solve matrix equations
Determine matrix equivalence
Find unknown matrix elements

Introduction to matrices: What a matrix is. How to add and subtract them.

4-3 Matrix Multiplication

Multiply by a scalar
Multiply matrices
Solve matrix equations involving multipliation

Matrix multiplication (part 1): Multiplying two 2x2 matrices.

Matrix multiplication (part 2): More on multiplying matrices.

4-5 2x2 Matrices, Determinants and Inverses

Find the determinant of a 2x2 matrix
Find the inverse of a 2x2 matrix
Know how to use the identity matrix

Inverse of a 2x2 matrix: Example of calculating the inverse of a 2x2 matrix

Homework

p166: 1-12
p174: 3, 5, 9, 11, 13, 17, 29, 31
p182: 5, 7, 9, 10, 20-29, 42-49, 50, 55
p199: 11-21 odd, 22-45